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Chapter 26 - Key Terms

Pearson_IT
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Terms in this set (18)

access point (AP)
A device that provides wireless service for clients within its coverage area or cell, with the AP connecting to both the wireless LAN and the wired Ethernet LAN.
ad hoc network (or IBSS)
Independent Basic Service Set: an impromptu wireless network formed between two or more devices without an AP or a BSS; also known as an ad hoc network.
band
A contiguous range of frequencies.
basic service set (BSS)
Wireless service provided by one AP to one or more associated clients.
Basic Service Set Identifier (BSSID)
A unique MAC address that is used to identify the AP that is providing a BSS.
channel
An arbitrary index that points to a specific frequency within a band.
cell
The area of wireless coverage provided by an AP; also known as the basic service area.
distribution system (DS)
The wired Ethernet that connects to an AP and transports traffic between a wired and wireless network.
Extended Service Set (ESS)
Multiple APs that are connected by a common switched infrastructure.
infrastructure mode
The operating mode of an AP that is providing a BSS for wireless clients.
mesh network
A network of APs used to cover a large area without the need for wired Ethernet cabling; client traffic is bridged from AP to AP over a backhaul network.
nonoverlapping channels
Successive channel numbers in a band that each have a frequency range that is narrow enough to not overlap the next channel above or below.
point-to-point bridge
An AP configured to bridge a wired network to a companion bridge at the far end of a line-of-sight path.
repeater
A device that repeats or retransmits signals it receives, effectively expanding the wireless coverage area.
roaming
The process a wireless client uses to move from one AP to another as it changes location.
Sevice Set Identifier (SSID)
A text string that is used to identify a wireless network.
station (STA)
An 802.11 client device that is associated with a BSS.
workgroup bridge (WGB)
An AP that is configured to bridge between a wired device and a wireless network. The WGB acts as a wireless client.
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